Some 2,000 years ago in ancient Rome, glass vessels carrying wine or water, or perhaps an exotic perfumes, tumble from a table in a marketplace, and shatter to pieces on the street. As centuries passed, the fragments were ...
Nanomaterials
Sep 18, 2023
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237
Reversible nanohelix transformation is one of the most exquisite and important phenomena in nature. Nanomaterials rarely form helical crystals. Due to the irreversibility of the twisting forces studied so far, untwisting ...
Nanophysics
Sep 13, 2023
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3
Sunlight is an inexhaustible source of energy, and utilizing sunlight to generate electricity is one of the cornerstones of renewable energy. More than 40% of the sunlight that falls on Earth is in the infrared, visible and ...
Nanomaterials
Sep 13, 2023
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46
Cells in the human body must adapt their protein balance to certain situations, such as the availability of iron or an infection. These adaptations occur through a complex process in which proteins that are no longer needed ...
Biochemistry
Sep 1, 2023
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85
A microscopic crack grew in a very small piece of platinum when placed under repetitive stretching. The experiment, designed to study fatigue crack growth, continued as predicted for a while before something unexpected happened. ...
Engineering
Aug 26, 2023
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92
Electronic nematic order in kagome materials has thus far been entangled with charge density waves. Now it is finally observed as a stand-alone phase in a titanium-based Kagome metal, a team of researchers led by Boston College ...
General Physics
Aug 24, 2023
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3
The stress-induced reorientation of low-symmetry defects due to substitution atom pairs can give rise to an internal friction peak called Zener relaxation. It is one of the most representative point defect relaxations in ...
Analytical Chemistry
Aug 23, 2023
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1
Researchers from Hefei Institutes of Physical Science (HFIPS), Chinese Academy of Sciences (CAS), have proposed a laser-assisted layer-by-layer covalent growth method to prepare highly crystalline all-graphene macrostructures ...
Condensed Matter
Aug 18, 2023
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1009
Carbon dioxide levels in Earth's atmosphere—and, consequently, ocean temperatures—are rising. How high and how fast ocean temperatures can rise can be learned from temperature measurements of ancient oceans. At the same ...
Earth Sciences
Aug 1, 2023
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14
Topology plays an enormous role in modern condensed matter physics and beyond. It describes how solid materials can combine two very different and somewhat contradictory properties—for example, topological insulators are ...
Condensed Matter
Jul 31, 2023
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116
In mineralogy and crystallography, a crystal structure is a unique arrangement of atoms in a crystal. A crystal structure is composed of a motif, a set of atoms arranged in a particular way, and a lattice. Motifs are located upon the points of a lattice, which is an array of points repeating periodically in three dimensions. The points can be thought of as forming identical tiny boxes, called unit cells, that fill the space of the lattice. The lengths of the edges of a unit cell and the angles between them are called the lattice parameters. The symmetry properties of the crystal are embodied in its space group. A crystal's structure and symmetry play a role in determining many of its properties, such as cleavage, electronic band structure, and optical properties.
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